Struct gimli::read::UnwindExpression

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pub struct UnwindExpression<T: ReaderOffset> {
    pub offset: T,
    pub length: T,
}
Expand description

The location of a DWARF expression within an unwind section.

This is stored as an offset and length within the section instead of as a Reader to avoid lifetime issues when reusing UnwindContext.

§Example

let expression = unwind_expression.get(&eh_frame)?;
let mut evaluation = expression.evaluation(fde.cie().encoding());
let mut result = evaluation.evaluate()?;
loop {
  match result {
     EvaluationResult::Complete => break,
     // Provide information to the evaluation.
     _ => { unimplemented!()}
  }
}
let value = evaluation.value_result();

Fields§

§offset: T

The offset of the expression within the section.

§length: T

The length of the expression.

Implementations§

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impl<T: ReaderOffset> UnwindExpression<T>

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pub fn get<R, S>(&self, section: &S) -> Result<Expression<R>>
where R: Reader<Offset = T>, S: UnwindSection<R>,

Get the expression from the section.

The offset and length were previously validated when the UnwindExpression was created, so this should not fail.

Trait Implementations§

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impl<T: Clone + ReaderOffset> Clone for UnwindExpression<T>

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fn clone(&self) -> UnwindExpression<T>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<T: Debug + ReaderOffset> Debug for UnwindExpression<T>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<T: PartialEq + ReaderOffset> PartialEq for UnwindExpression<T>

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fn eq(&self, other: &UnwindExpression<T>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<T: Copy + ReaderOffset> Copy for UnwindExpression<T>

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impl<T: Eq + ReaderOffset> Eq for UnwindExpression<T>

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impl<T: ReaderOffset> StructuralPartialEq for UnwindExpression<T>

Auto Trait Implementations§

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impl<T> Freeze for UnwindExpression<T>
where T: Freeze,

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impl<T> RefUnwindSafe for UnwindExpression<T>
where T: RefUnwindSafe,

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impl<T> Send for UnwindExpression<T>
where T: Send,

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impl<T> Sync for UnwindExpression<T>
where T: Sync,

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impl<T> Unpin for UnwindExpression<T>
where T: Unpin,

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impl<T> UnwindSafe for UnwindExpression<T>
where T: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.